In 2026, the easiest way to tell is by looking at your boarding group and baggage allowance in the United app. Basic Economy (Fare Class N) is strictly restricted: you are assigned to the very last boarding group (Group 6) and are not allowed a full-sized carry-on bag (only a personal item that fits under the seat) on domestic and short-haul flights. A supportive peer "check-in" tip: if you try to select a seat and the app prompts you to pay for every single option, or if your ticket says "No changes allowed," you are likely in Basic Economy. Standard Economy (Economy/Main) allows you one carry-on, one personal item, and the ability to change your flight for a fare difference. Always verify your "Fare Class" on your confirmation email; if it explicitly says "Basic Economy," you'll need to pay a surcharge at the airport if you bring a suitcase for the overhead bin.